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Meaning of Poseidon

Po•sei•don

Pronunciation: (pō-sīd'n, pu-), [key]
— n.
  1. the ancient Greek god of the sea, with the power to cause earthquakes, identified by the Romans with Neptune.
  2. a 34-foot (10-m), submarine-launched U.S. ballistic missile with up to 10 warheads and a range of 2800 miles (4502 km).
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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